JP2006115486A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus provided with a projector wherein part of a projected image is not projected on a stand even when the placing form is changed. <P>SOLUTION: A projector module 6 mounted on a mobile phone 10 with a projector projects a projection image Iv at a position that is offset to the right from the opening center O of the projector module 6 and offset upwardly from the opening center O of the projector module 6 in a state the mobile phone 10 with the projector is placed at a vertical position. The projector module 6 projects a projection image Ih at a position that is offset to the left from the opening center O of the projector module 6 and offset upwardly from the opening center O of the projector module 6 in a state the mobile phone 10 with the projector is placed at a horizontal position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a projector device mounted on an electronic device that projects information such as an image and text.

  An electronic device in which a projector is mounted on a small device such as a cellular phone is known (see Patent Document 1). The projector-equipped mobile phone described in Patent Document 1 projects information on the palm of the caller while calling, or projects information on the wall surface while calling.

JP 2000-236375 A

  Considering the situation where the projector-equipped mobile phone is placed directly on a table and the information is projected onto the wall by the projector, it is assumed that a part of the projected image is projected on the table and the entire projected image is not projected on the wall. Is done. This becomes more problematic as the projector-equipped mobile phone becomes smaller and the projection optical system of the projector gets closer to the placement surface. In particular, in the case of a device such as the projector-equipped mobile phone, a plurality of types of mounting modes are conceivable as mounting modes on the table, and it is necessary to solve the above problems for each mounting mode. . Furthermore, it is desired that an image in an appropriate direction can be projected according to such a mounting form and the type of information to be projected (for example, a portrait screen / a landscape screen).

The invention according to claim 1 is applied to an electronic apparatus including a projector device that projects an image formed on the optical image forming element toward a projection surface outside the housing via a projection optical system. Then, the projector device includes a first placement mode in which the electronic device is placed with the first surface of the housing facing down on a plane on which the electronic device and the projection surface are placed, and the first surface. In any of the second mounting forms in which the electronic device is mounted with the second surface of a different casing down, the direction of the projected light beam is set so that the image projected from the projector device is not blocked by the plane. And projecting an image.
The electronic device according to claim 1, wherein the direction of the projected light beam is such that the center line of the projected light beam is directed upward from a plane parallel to the plane in both the first placement mode and the second placement mode. Is preferable.
In the electronic device according to claim 1, the direction of the projected light beam is preferably determined so that the end of the projected light beam does not protrude from either the first surface or the second surface of the electronic device.
In the electronic device according to claim 1, the direction of the projected light beam is the direction of projection toward the projection surface at the lower end of the projected light beam in both the first mounting mode and the second mounting mode. It is preferable that the direction is determined so as to face the same direction as or higher than the plane parallel to the plane.
2. The electronic device according to claim 1, wherein the direction of the projected light beam is within a range of a projection distance in which a focus state of an image on the projection surface is appropriately maintained and is disposed at a position of the maximum projection distance. When the projector device projects an image, it is preferable that the image is determined not to be blocked by a plane in both the first placement mode and the second placement mode.
The electronic apparatus according to claim 1 further corrects the trapezoidal distortion on the projection surface of the image projected from the projector device with the same correction characteristics in each of the first mounting form and the second mounting form. Correction means may be provided.
The electronic device according to claim 6, wherein the correction unit further adjusts the correction characteristics of the trapezoidal distortion of the image on the projection surface to different correction characteristics in the first mounting form and the second mounting form. It can be changed and corrected.
In the electronic device according to any one of claims 1 to 6, a member that indicates to be lowered when placed may be provided on each of the first surface and the second surface.
The electronic apparatus according to any one of claims 1 to 8 may further include a rotation driving unit that rotationally drives at least the optical image forming element according to at least one of a type of information to be projected and a mounting form of the electronic apparatus. .
The electronic apparatus according to any one of claims 1 to 8 may further include a projection image rotating unit that forms an image in which the direction of the image is rotated on the optical image forming element. In this case, the projection image rotating unit includes: The direction of the image can also be rotated according to at least one of the type of information to be projected and the mounting form of the electronic device.
According to an eleventh aspect of the present invention, there is provided an electronic apparatus comprising: a projector including a projector device that projects an image formed on the optical image forming element toward a projection surface outside the casing via the projection optical system; The apparatus is characterized in that at least the optical image forming element is configured to be rotatable about an axis substantially parallel to the optical axis of the projection optical system in a state where the housing is placed on the placement surface.
In the electronic device according to claim 11, the projector device is preferably configured to be rotatable in different directions around a substantially parallel axis.
The electronic apparatus according to claim 11, wherein the projector device may further include an LED light source that has an illumination optical axis that is non-parallel to the rotation axis and that illuminates an image formed on the optical image forming element.
The electronic device according to an eleventh aspect of the invention may further include a rotation driving unit that rotates the projector device according to at least one of a type of information to be projected and a direction in which the electronic device is placed.

In the electronic device according to the first aspect of the invention, even if the electronic device and the projection surface are placed on the plane on which the electronic device and the projection surface are placed with the first surface of the electronic device facing down, the second surface of the electronic device is Even if placed down, the image can be projected without being blocked by a flat surface.
In the electronic device according to the eleventh aspect, the display direction of the projected image can be changed so that the image is projected in an appropriate direction.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a projector-equipped mobile phone 10 that can be used in handholding according to an embodiment of the present invention. In FIG. 1, a projector-equipped mobile phone 10 is configured such that a casing constituting an operation unit 1 and a display unit 2 is supported by a rotatable folding hinge unit 3 and can be folded around the folding hinge unit 3 as a rotation center. ing. The folding hinge unit 3 is provided with a click mechanism (not shown) at a relative angle θ between the operation unit 1 and the display unit 2 of 90 degrees and 150 degrees, for example. 90 degrees corresponds to the projection posture of the projector unit, and 150 degrees corresponds to the telephone call posture.

  Small legs 12a to 12d are provided on the bottom surface 1a of the operation unit 1 so as to be stable when the projector-equipped mobile phone 10 is placed on a flat surface. A first operation member 112, which will be described later, is provided on a surface 1b on the display unit 2 side of the operation unit 1, and a small leg 11 is provided on a side surface 1c of the operation unit 1. The small leg portion 11 is placed on a flat surface with the side surface 1c facing down (side position mounting) with the relative angle θ of the projector-equipped mobile phone 10 being 90 degrees as shown in FIG. 1 (projection posture). And the small leg portion 21 disposed on the folding hinge portion 3 and the display portion 2 so as to be stably placed at three points.

  A main liquid crystal display 204, which will be described later, is disposed on the surface 2b on the operation unit 1 side of the display unit 2, and a sub liquid crystal display 4 is disposed on the outer surface 2a of the display unit 2. Further, a camera taking lens 5 and a projector module 6 are provided on the surface 2a of the display unit 2, respectively. The projector module 6 is configured in a cylindrical shape, and is rotatably inserted into a circular hole M provided on the surface 2a of the display unit 2, and is based on the normal position (assumed to be 0 degrees) and the normal position shown in FIG. Click mechanisms (not shown) are provided at a total of three locations including two positions obtained by rotating the projector module 6 by 90 degrees in the left and right directions.

  FIG. 2 is a block diagram illustrating the configuration of the projector-equipped mobile phone 10 of FIG. In FIG. 2, the CPU 101, the memory 102, the attitude sensor 103, the short-range communication unit (circuit) 104, the TV tuner 106, the microphone 107, and the external interface (I / F) 108 are provided on the operation unit 1 side. , A power source 109, a communication control unit (circuit) 110, an antenna 7, a GPS antenna 111, a first operation member 112, a speaker 113, and an open / close angle switch (SW) 114, and a removable memory. A card 105 is mounted.

  The display unit 2 includes a camera unit 200, a projector module 6 (projector unit), a second operation member 205, a speaker 206, a motor 207, a main liquid crystal display 204, and a sub liquid crystal display 4. ing.

  Based on the control program, the CPU 101 serving as a controller sends a control signal to each part of the projector-equipped mobile phone 10 by performing a predetermined calculation using signals input from each part constituting the projector-equipped mobile phone 10. Thus, the telephone operation, the camera operation, and the projector operation are respectively controlled. The control program is stored in a nonvolatile memory (not shown) in the CPU 101.

  The memory 102 is used as a working memory for the CPU 101. The attitude sensor 103 detects the attitude of the projector-equipped mobile phone 10 and sends a detection signal to the CPU 101. Thereby, the CPU 101 obtains the top and bottom information (including information for identifying the vertical position shooting and the horizontal position shooting) indicating the top and bottom of the image at the time of shooting, and is placed at the vertical position as shown in FIG. 1 when the projector is used. It is determined whether the small leg portions 11 and 21 and the folding hinge portion 3 are placed in the horizontal position.

  The short-range communication unit 104 is configured by, for example, an infrared communication circuit, and transmits / receives data to / from an external device according to a command from the CPU 101. The TV tuner 106 receives a television broadcast according to a command from the CPU 101. The CPU 101 displays the received image on the main liquid crystal display 204 and reproduces the received sound with the speaker 206. The memory card 105 is composed of a non-volatile memory, and can write, save, and read data such as image data output from the camera unit 200 and video / audio data output from the TV tuner 106, for example, according to instructions from the CPU 101. It is.

  The microphone 107 converts the collected sound into an electrical signal and sends it to the CPU 101 as an audio signal. The audio signal is recorded in the memory card 105 during recording, and is sent to the communication control unit 110 during a call. The external interface 108 transmits / receives data to / from an external device via a cable or cradle (not shown) according to a command from the CPU 101.

  The speaker 113 reproduces sound based on the sound signal output from the CPU 101. The first operation member 112 includes a dial button of a telephone and sends an operation signal corresponding to the pressed button to the CPU 101. The GPS antenna 111 receives a signal from a GPS satellite and sends received data to the CPU 101. The CPU 101 is configured to be able to calculate position information using received data from the GPS antenna 111. The communication control unit 110 includes a wireless transmission / reception circuit, and performs communication with other telephones via a base station (not shown) according to a command from the CPU 101. The communication control unit 110 is configured to be able to transmit and receive image data taken by the camera unit 200 and image data to be projected by the projector module 6 in addition to telephone voice. The antenna 7 is a transmission / reception antenna of the communication control unit 110.

  The power source 109 is composed of, for example, a detachable battery pack and a DC / DC conversion circuit, and supplies necessary power to each unit in the projector-equipped mobile phone 10. The opening / closing angle SW 114 detects the rotation angle of the folding hinge unit 3 and sends an ON signal to the CPU 101 when it detects that the relative angle θ between the operation unit 1 and the display unit 2 is 90 degrees (projection posture). An off signal is sent at other angles. The CPU 101 performs the projection operation of the projector module 6 when receiving the ON signal, and does not perform the projection operation when receiving the OFF signal.

  The main liquid crystal display 204 displays information such as images and texts according to instructions from the CPU 101. The sub liquid crystal display 4 displays information such as images and texts according to instructions from the CPU 101. The text information includes the operation state of the projector-equipped mobile phone 10, the operation menu, the contents of sent / received mail, and the like. Further, the main liquid crystal display 204 is configured to be able to display the same image as that projected by the projector module 6. The second operation member 205 includes a button associated with the display content of the main liquid crystal display 204 and sends an operation signal corresponding to the pressed button to the CPU 101. The speaker 206 reproduces sound based on the sound signal output from the CPU 101 in a call posture in which the relative angle θ is 150 degrees.

  The camera unit 200 includes a photographing lens 5, an image sensor 201, a lens driving unit (circuit) 202, and a camera control CPU 203 that is a controller. As the image sensor 201, a CCD, a CMOS image sensor or the like is used. The camera control CPU 203 drives and controls the image sensor 201 and the lens driving unit 202 according to instructions from the CPU 101. When receiving a zoom control signal from the camera control CPU 203, the lens driving unit 202 drives a zoom lens (not shown) constituting the photographing lens 5 to the tele side or the wide side according to the control signal. The photographing lens 5 forms a subject image on the imaging surface of the image sensor 201. The camera control CPU 203 causes the image sensor 201 to start imaging, reads the accumulated charge signal from the image sensor 201 after completion of imaging, performs predetermined signal processing, and sends it to the CPU 101 as image data. Note that when image data captured by the camera unit 200 is transmitted, the image data is transmitted from the CPU 101 to the communication control unit 110. When projecting a captured image, image data is sent from the camera control CPU 203 to the projector module 6 via the CPU 101. In the CPU 101 that is an image processing circuit, trapezoidal distortion correction (keystone correction) processing is performed on the image data projected by the projector module 6.

  The projector module 6 includes a projection lens 61, a liquid crystal panel 62, an LED light source 63, an LED drive unit (circuit) 64, a liquid crystal drive unit (circuit) 65, and a lens drive unit (circuit) 66. The LED drive unit 64 supplies current to the LED light source 63 in accordance with the LED drive signal output from the CPU 101. The LED light source 63 illuminates the liquid crystal panel 62 with brightness according to the supply current.

  The liquid crystal drive unit 65 generates a liquid crystal panel drive signal according to the image data, and drives the liquid crystal panel 62 with the generated drive signal. Specifically, a voltage corresponding to the image signal is applied to the liquid crystal layer for each pixel. In the liquid crystal layer to which a voltage is applied, the arrangement of liquid crystal molecules changes, and the light transmittance of the liquid crystal layer changes. Thus, the liquid crystal panel 62 generates an optical image by modulating the light from the LED light source 63 in accordance with the image signal.

  The lens driving unit 66 drives the projection lens 61 to advance and retract in a direction orthogonal to the optical axis of the projection lens 61 based on a control signal output from the CPU 101. Further, the lens driving unit 66 can adjust the focus of the image on the screen placed in a predetermined projection distance range by driving the focus lens of the projection lens 61. The projection lens 61 projects a light image emitted from the liquid crystal panel 62 toward a screen or the like.

(Projected image offset)
A projection image by the projector module 6 will be described in detail. In FIG. 3, the projection lens 61 is opposed to the screen S, and is projected onto the screen S placed at a predetermined projection distance position on the plane from the mobile phone 10 with the projector placed on the plane P in the vertical position. It is a figure explaining the image Iv. In FIG. 3 and FIG. 4 described later, the projector-equipped mobile phone 10 is placed on the plane P in the above-described projection posture, and the display surface of the main liquid crystal display 204 and the screen S (projection surface) are arranged on the screen S. It is set as the substantially parallel state so that it can visually recognize simultaneously from the direction which faces directly. FIG. 3A is a view of the screen S as viewed from the front, and FIG. 3B is a view of the screen S viewed from the right side. The projected image on the screen S is enlarged and projected with a length of at least one side larger than the vertical or horizontal dimension of the housing of the projector-equipped mobile phone 10.

  In FIG. 3A, the center point C of the projected light beam of the projection image Iv is offset to the right from the opening center O of the projector module 6. In other words, the left end of the projection light beam is directed to the right from the plane corresponding to the laterally mounted surface composed of the small legs 11 and 21 and the hinge 3. At the same time, the projection image Iv is offset upward from the opening center O of the projector module 6 so as not to cover the plane P. That is, the lower end of the projection light beam is directed above a plane (vertical position placement surface) P composed of the small leg portions 12a to 12d. The rotation position of the projector module 6 is set to 0 degrees. A point C in the figure represents the center of the projected light beam (the center of the projection image Iv), and a line Fc connecting the opening center O and the point C corresponds to the center line of the light beam.

  4 shows the same projection distance position as that in FIG. 3 from the projector-equipped mobile phone 10 placed on the plane P with the projection lens 61 facing the screen S in the horizontal position in the state of the projection image offset shown in FIG. It is a figure explaining the image Ih projected on the screen S mounted in. 4A is a view of the screen S when viewed from the right, and FIG. 4B is a view of the screen S viewed from the right side. The projected image on the screen S is enlarged and projected with a length of at least one side larger than the vertical or horizontal dimension of the housing of the projector-equipped mobile phone 10. 4A, the center point C of the projected light beam of the projection image Ih is offset leftward from the opening center O of the projector module 6 and the center of the opening of the projector module 6 so that the projection image Ih does not cover the plane P. It is offset above O. That is, the lower end of the projection light beam is directed above a plane (lateral position placement surface) P composed of the small legs 11 and 21 and the hinge 3. The rotation position of the projector module 6 is set to 0 degrees. A point C in the figure represents the center of the projected light beam (the center of the projection image Ih), and a line Fc connecting the opening center O and the point C corresponds to the center line of the light beam.

  Thus, at the time of the vertical position mounting, as shown in FIG. 3A, the lower end of the projected light beam is above the plane (vertical position mounting surface) P composed of the small legs 12a to 12d and the projected light beam. 4 is offset and projected to the right from the plane corresponding to the horizontal position mounting surface composed of the small legs 11 and 21 and the hinge 3, so that the horizontal position is placed as shown in FIG. Even at the time of placement, the lower end of the projected light beam is projected with an offset above the plane (lateral position placement surface) made up of the small legs 11 and 21 and the hinge 3, and the projected light flux depends on the assumed placement direction. The part is not blocked by the mounting surface.

  That is, until the end of the projected light beam reaches the screen S at a predetermined projection distance position, the plane (vertical position mounting surface) including the small legs 12a to 12d, the small legs 11, 21 and the hinge 3 are included. The direction of the projected light beam is determined so as not to be blocked by any of the flat surfaces (lateral position placement surfaces). The lower end of the projected light beam extends from the shortest projection distance to the screen S placed within the range from the shortest projection distance to which the projection lens 61 can adjust the focus. It is desirable that it is determined not to be blocked by any of the above. The projector module 6 is configured so that an appropriate focus state is maintained and other predetermined optical performance is maintained within the above range. That is, the lower end of the projected luminous flux is placed at a predetermined projection distance within the above range, such as the above maximum projection distance, all projection distances within the above range, or a projection distance greater than or equal to the above shortest projection distance. It is determined not to be blocked by either the vertical position mounting surface or the horizontal position mounting surface until the screen S is placed. Of course, even when the projection lens 61 that cannot adjust the focus is used, the same configuration as described above can be used within the projection distance range in which an appropriate focus state is maintained. Even if the projector module 6 is fixed in such an offset state, the projector module 6 may be capable of adjusting the direction of the projected light beam with such an offset state as a default state. Here, determining the direction of the projection light beam corresponds to determining the direction of the center line or the lower end of the projection light beam described above.

  The offset of the projected image is performed by shifting the projection lens 61 in the direction perpendicular to the optical axis of the projection lens 61 by the lens driving unit 66 described above. However, the liquid crystal panel 62 and the LED light source 63 may be configured to advance and retract in the direction perpendicular to the optical axis of the projection lens 61. That is, by changing the relative positional relationship between the projection lens 61 and the liquid crystal panel 62 in a direction perpendicular to the optical axis of the projection lens 61, an offset of the projection image can be realized. Even when the projection image is offset in this way, the optical axis of the projection lens 61 is substantially parallel to the illumination optical axis Ax (FIG. 5) by the LED light source 63. The offset amount of the projected image may be fixed to the state shown in FIGS. 3 and 4 or may be changeable to the state shown in FIGS. 3 and 4. In the latter case, it is desirable that the default state is set to the state shown in FIGS. When a part of the projection lens 61, the liquid crystal panel 62, and the LED light source 63 is moved in the direction perpendicular to the optical axis of the projection lens 61, keystone correction is performed on the display data projected in accordance with the movement. Done.

  As described above, the projection image changes to a trapezoidal shape only by giving an offset to the projection image. Therefore, electrical keystone correction by image processing is performed to correct the projected image into a rectangular shape. As illustrated in FIGS. 3 and 4, this keystone correction is performed when the optical axis of the projection lens 61 and the projection surface are vertical, when the projector-equipped mobile phone 10 is placed in the vertical position, Correction with the same correction characteristics is performed for the case where the position is placed. As the keystone correction amount, an initial correction value for correcting the projected images Iv and Ih into a square shape in the state of vertical position mounting and horizontal position mounting is stored in the CPU 101 in advance. The CPU 101 performs keystone correction processing on the image data projected from the projector module 6 based on the initial correction value.

(Rotation of projected image)
As shown in FIGS. 3A and 3B, when projecting a content for a portrait screen while being placed in a portrait position (the projection screen is a landscape screen), the CPU 101 drives the motor 207 to project the projector module 6. Is rotated 90 degrees rightward in FIG. 1 so that an erect image IvR is projected. The erect image IvR is obtained by rotating the projection image Iv around the opening center O (more precisely, a rotation axis substantially parallel to the optical axis of the projection lens 61). “Substantially parallel” means that the included angle between the rotation axis of the projector module 6 including the liquid crystal panel 62 and the optical axis of the projection lens 61 is 30 degrees or less. The CPU 101 identifies whether the content of the screen to be displayed is content for the landscape screen or content for the portrait screen as follows. When the content to be projected is an image photographed by the camera unit 200, the top and bottom information at the time of photographing is used. The top and bottom information at the time of shooting can be obtained from the output of the attitude sensor 103, and the top and bottom information obtained in this way is stored in a predetermined area of the image data file. When the content to be projected is text other than an image photographed by the camera unit 200, the CPU 101 displays screen information (for example, screen aspect ratio information) of incidental data included in the content data or the application software that created the content data. The type information is used to identify whether the content is for landscape screen or portrait screen.

  When the projector module 6 is rotated 90 degrees in the right direction in FIG. 1 and an upright image is not projected, the CPU 101 sends a command to the liquid crystal driving unit 65 so that the image formed on the liquid crystal panel 62 is 180 degrees. The liquid crystal panel drive signal is changed so as to rotate, and the image formed on the liquid crystal panel 62 is turned upside down. Also in this case, whether or not to rotate the image formed on the liquid crystal panel 62 is determined using the top and bottom information at the time of shooting. As a result, regardless of the direction in which the photographer holds the projector-equipped mobile phone 10 during photographing, the upright image is always projected by automatically recognizing the top of the content.

  Similarly, when projecting a content for a landscape screen in a state where it is placed in a landscape position (the projection screen is a portrait screen) as shown in FIGS. And the projector module 6 is rotated 90 degrees in the left direction in FIG. 1 so that the erect image IhL is projected. The erect image IhL is obtained by rotating the projection image Ih around the opening center O (more precisely, a rotation axis substantially parallel to the optical axis of the projection lens 61). “Substantially parallel” means that the included angle between the rotation axis of the projector module 6 including the liquid crystal panel 62 and the optical axis of the projection lens 61 is 30 degrees or less.

  When the projector module 6 is rotated 90 degrees in the left direction in FIG. 1 and an upright image is not projected, the CPU 101 sends a command to the liquid crystal driving unit 65 so that the image formed on the liquid crystal panel 62 is 180 degrees. The liquid crystal panel drive signal is changed so as to rotate, and the image formed on the liquid crystal panel 62 is turned upside down. Thus, an erect image is always projected regardless of the direction in which the photographer holds the projector-equipped mobile phone 10 during photographing.

  FIG. 5 is an enlarged view of the projector module 6. In FIG. 5, the two light sources 61 a and 61 b constituting the LED light source 63, the liquid crystal panel 62, and the projection lens 61 are all accommodated in the cylindrical member 60. In a state where the projection lens 61 is not shifted in the direction perpendicular to the optical axis of the projection lens 61, the optical axis of the projection lens 61 coincides with the illumination optical axis Ax. Note that the actuator (lens driving unit 66), the liquid crystal driving unit 65, and the LED driving unit 64 that drive the two lenses 61a and 61b forward and backward are not shown. When the projector module 6 is rotated, for example, the liquid crystal panel 62 rotates around the illumination optical axis Ax by the LED light source 63. As described above, since the liquid crystal panel 62 and the projection lens 61 are rotated by the rotation of the projector module 6, the projection image can be rotated as shown in FIGS. 3 (a) and 4 (a). The relative positional relationship among the projection lens 61, the liquid crystal panel 62, and the LED light source 63 is kept constant even when the projector module 6 rotates. By adopting such a configuration, in a state where the projection lens 61 is shifted in the direction perpendicular to the optical axis, an image offset according to the direction and amount of the shift can be projected from the projection lens 61. . Further, the rotation of the projector module 6 including the liquid crystal panel 62 may be performed around the optical axis of the projection optical system such as the projection lens 61 or an axis substantially parallel thereto. Here, “substantially parallel” means that the angle between the rotation axis of the projector module 6 and the optical axis is 30 degrees or less. In the present embodiment, the LED light source 63 is used as a light source, and the light emission characteristics are not affected by gravity. Therefore, even if the optical axis of the illumination unit is not substantially parallel to the rotation axis of the projector module 6, the light emission characteristics of the illumination unit do not change due to the influence of gravity, and the image quality of the projected image can be improved by the above rotation. Can be maintained. If the configuration is such that the emitted light beam of the LED light source 63 is reflected by a mirror or the like and guided to the liquid crystal panel 62, and the optical axis of the illumination unit and the rotation axis are orthogonal (non-parallel), the apparatus is made thinner. In addition, an apparatus that does not deteriorate image quality due to rotation can be realized.

  Furthermore, it is good also as a structure which fixes a projection lens to a housing | casing and rotates the part (a liquid crystal panel, LED light source part) except a projection lens part. Or it is good also as a structure which fixes a projection lens and an LED light source part to a housing | casing, and rotates other parts. With such a configuration, the weight of the rotating portion can be reduced. For example, when the rotating portion is manually rotated by a manual operation of an operating member provided on a surface facing the surface on which the small leg portion 21 is provided. Can be rotated with a small force. Moreover, also when rotating electrically, a drive part (motor) can be reduced in size and an apparatus can be reduced in size. Note that the relative positional relationship among the liquid crystal panel, the LED light source, and the projection lens is maintained by such rotation. In each of the embodiments described above, if the rotating part is not exposed to the external appearance of the apparatus, the possibility of occurrence of a situation where foreign matter mixed in from the outside of the casing gets stuck in the rotating part and rotation is not performed is reduced. The The structure that does not expose means a state in which the rotating sliding portion between the projector module 6 and the display unit 2 is configured not to be exposed to the outside. For example, the projector module 6 rotates within the display unit 2, It is configured by covering the emission part of the projected image with a transparent member.

  FIG. 6 is a flowchart for explaining the flow of the rotation process of the projector module 6 performed by the CPU 101. The process according to FIG. 6 is activated when the projector is used. In step S <b> 11 of FIG. 6, the CPU 101 as a determination circuit determines whether or not the display form of the content to be projected is different from the projection form at the current placement position. In other words, the CPU 101 is or is placed when the projected content is a vertically long screen and the projector module 6 is projecting a horizontally long screen with the vertical orientation of FIG. If the projected content is a landscape screen in the state where the orientation is placed in the landscape position of FIG. 4A and the projector module 6 is projecting a portrait screen, the determination in step S11 is affirmative and the process proceeds to step S12. When the projected image Iv in a) or the projected image Ih in FIG. 4A matches the display form (vertical screen, horizontal screen) of the content to be projected, a negative determination is made in step S11, and the process proceeds to step S16. move on.

  In step S12, the CPU 101 drives the motor 207, rotates the projector module 6 by 90 degrees, and proceeds to step S13. 3A, the projector module 6 is rotated 90 degrees to the right as shown in FIG. 1, and in the horizontal position shown in FIG. 4A, the projector module is placed. 6 is rotated 90 degrees to the left shown in FIG. At this time, the relative positional relationship between the projection lens 61, the liquid crystal panel 62, and the LED light source 63 is kept constant even when the projector module 6 is rotated. The 10 mounting surfaces P are not interrupted. In step S13, the CPU 101, which is a determination circuit, determines whether the display of the screen to be projected is upside down. When the projected content is a captured image and the upside down is determined based on the top and bottom information at the time of shooting, the CPU 101 makes a positive determination in step S13 and proceeds to step S14. On the other hand, if it is determined that the projected content is a captured image and is not upside down based on the top and bottom information at the time of shooting, a negative determination is made in step S13 and the process proceeds to step S15. The projection content is data other than the photographed image, and the display form (vertical screen, horizontal screen) of the content to be projected, and the vertical direction thereof can be determined by the header information included in the file of the projection content data. In this case, the determination in step S13 is performed using this information.

  In step S14, the CPU 101 sends a command to the liquid crystal drive unit 65, changes the liquid crystal panel drive signal so that the image formed on the liquid crystal panel 62 is rotated 180 degrees, and proceeds to step S15.

  In step S15, the CPU 101 causes display B to be performed. Specifically, a command is sent to the LED drive unit 64, the LED light source 63 is turned on, and the process returns to step S11. Thereby, the projection image IvR is projected in the state of FIG. 3A, and the projection image IhL is projected in the state of FIG.

  In step S16, the CPU 101 causes display A to be performed. Specifically, a command is sent to the LED drive unit 64, the LED light source 63 is turned on, and the process returns to step S11. Thereby, the projection image Iv is projected in the state of FIG. 3A, and the projection image Ih is projected in the state of FIG. In addition, you may make it perform the same process as step S13 and step S14 between step S11 and step S16 as needed.

  Further, when the CPU 101 displays the same information as the information projected by the projector module 6 or the text information described above on the main liquid crystal display 204, the projector module 6 projects the orientation of the image displayed on the main liquid crystal display 204. The display image displayed on the main liquid crystal display 204 is electrically rotated so that the orientation of the image to be aligned is aligned.

According to the embodiment described above, the following operational effects can be obtained.
(1) The projector module 6 mounted on the projector-equipped mobile phone 10 is such that the center point of the projected light beam is the projector module 6 in a state where the projector-equipped mobile phone 10 is placed in a vertical position (the projection screen is a landscape screen). The projection image Iv is projected to a position offset rightward from the opening center O of the projector module 6 and offset upward from the opening center O of the projector module 6 (FIG. 3). However, the rotation position of the projector module 6 is 0 degree. Therefore, a part of the projection image Iv does not cover the placement surface (plane P), so that the projection image is easy to see.

(2) The projector module 6 of the above (1) is mounted in the horizontal position by rotating the mobile phone 10 with a projector from the vertical position mounting state by about 90 degrees in a plane substantially parallel to the projection surface (the projection screen is vertically long). Screen), the center point of the projected light beam is offset leftward from the aperture center O of the projector module 6, and the projection image is offset in the opposite direction to the rotation before the rotation. A projected image Ih is projected at a position offset upward from the opening center O of FIG. 6 (FIG. 4). Therefore, even if the offset amount is not changed from the state shown in FIG. 3 (a) without changing, a part of the projection image Ih does not cover the placement surface (plane P). An easy-to-see projection image can be obtained regardless of the vertical position and horizontal position.

(3) Since the keystone correction by the image processing is performed to correct the trapezoidal distortion of the projection image generated by the projection of the offset image, a projection image in which the trapezoidal distortion due to the offset of the projection position is suppressed is obtained. It is done. When the optical axis of the projection lens 61 and the projection surface are not perpendicular, the trapezoidal distortion of the projection image is caused by rotation of the projection image (rotation of the projector module 6, electrical rotation of the projection image data, mobile phone 10 with a projector. Of the vertical position / rotation by horizontal position). If the CPU 101 can correct this distortion, it is even more preferable. Based on the operation of the first operation member 112 or a remote control device (not shown), the CPU 101 performs two states before and after the projection image is rotated to correct this distortion (for example, the vertical position mounting state and the horizontal position). In the mounting state, the correction characteristic can be changed so that the keystone correction is performed with a different correction characteristic.

(4) Since the projector-equipped mobile phone 10 is provided with the small legs 12a to 12d, 11 and 21, the projector-equipped mobile phone 10 is stable regardless of the vertical position and the horizontal position, and an easy-to-see projection image is obtained. In addition, the operator can easily grasp the placement direction. For example, if the projector-equipped mobile phone 10 is placed in a lateral position opposite to the direction shown in FIG. 4A, the projected images Ih and IhL shown in FIG. It will be. According to the present embodiment, such a situation can be prevented in advance.

(5) The projector module 6 is configured in a cylindrical shape, and is configured to be freely inserted into a hole M provided in the surface 2a of the display unit 2 of the projector-equipped mobile phone 10. In the cylindrical member 60, the LED light source 63, the liquid crystal panel 62, and the projection lens 61 are all accommodated. When the projector module 6 is rotated, the liquid crystal panel 62 and the projection lens 61 are rotated, so that the projection image is rotated as shown in FIGS. 3 (a) and 4 (a). Therefore, even when the content to be projected is mixed with content for a landscape screen and content for a portrait screen, it is possible to always obtain an upright projection image without changing the placement direction of the projector-equipped mobile phone 10 for each content. it can.

(6) The rotation of the projector module 6 determines, for example, whether the display form of content such as a portrait screen or landscape screen is different from the projection form at the current placement position (step S11). Since it is automatically rotated by the motor 207 (step S12), usability is improved. In particular, in the case of a mobile device such as the projector-equipped mobile phone 10, the projector-equipped mobile phone 10 moves even when operated with a finger, and thus the projected image may shake and the observer may feel uncomfortable. If the projector module 6 is automatically rotated to eliminate the need for the rotation operation of the projection image, it is possible to prevent the projection image from shaking and making the observer uncomfortable.

(7) Since the click mechanism is provided at a total of three positions, that is, the normal position of the projector module 6 (assumed to be 0 degrees) and the two positions rotated 90 degrees in the left and right directions with reference to the normal position, the projector module When the 6 is manually rotated, the rotation operation is facilitated.

(8) It is determined whether the display of the screen to be projected is upside down using the top and bottom information (step S13). If the screen is upside down, the image automatically formed on the liquid crystal panel 62 is rotated 180 degrees. Since this is done (step S14), an upright image is always projected regardless of the direction in which the photographer holds the projector-equipped mobile phone 10 during photographing. In this case, the keystone correction is also changed in accordance with the rotation.

  The offset amount illustrated in FIGS. 3 and 4 may be further increased. When the projector is placed in the vertical position, the lower end of the projection light beam is projected upward from the opening center O of the projector module 6 and the left end of the projection light beam is offset from the opening center O to the right. (During Iv projection in FIG. 3A). That is, in each placement state, the direction of the lower end of the projection light beam toward the screen S is parallel to the plane P so that the lower end of the projection light beam is above the plane parallel to the plane P regardless of the projection distance. Determine the direction of the projected light beam (in the same direction or above). In this way, when placed in the horizontal position, the lower end of the projected light beam on the projection surface is the center O of the projector module 6 (more precisely, the projected light beam on the surface including the principal point perpendicular to the optical axis of the projection lens 61). The right end of the projection light beam on the projection surface is more to the left than the aperture center O (more precisely, the right end of the projection light beam on the surface including the principal point perpendicular to the optical axis of the projection lens 61). Therefore, a part of the projected light beam is not blocked by the mounting surface P depending on the distance to the screen S, such as when the distance from the projector-equipped mobile phone 10 to the screen S is long. . When the offset amount is changeable, this state is preferably set as a default state.

  Although it has been described that the lens shift amount for determining the offset amount is stored in the CPU 101 as an initial correction value and the lens shift is performed based on the initial correction value, the optical system is configured so that a predetermined amount of offset is obtained in advance. The positional relationship between the projection lens 61, the liquid crystal panel 62, and the LED light source 63 may be fixed. Further, the correction of the trapezoidal distortion of the projection image generated at this time may be either an electric correction by image processing or an optical correction by an optical element.

  The CPU 101 automatically turns the image formed on the liquid crystal panel 62 upside down by using the top-and-bottom information at the time of shooting. However, the CPU 101 receives the information from the operation member (the first operation member 112 or the second operation member 205). You may comprise so that the image formed in the liquid crystal panel 62 may be turned upside down according to the operation signal or the operation signal received via the near field communication part 104. FIG.

  The CPU 101 automatically drives the motor 207 by using the top and bottom information at the time of shooting to rotate the projector module 6. In addition to this, depending on the type of content to be projected, for example, a received image of a television broadcast is projected on a landscape screen, and a normal display screen (including a mail display screen) of a mobile phone is projected on a portrait screen. It may be rotated depending on the type.

  Further, when it is detected that the projector-equipped mobile phone 10 is set in a cradle connected to a computer, switching between the landscape screen projection and the portrait screen projection may be performed. When the projector-equipped mobile phone 10 is placed (set) on the cradle, for example, it is automatically set to a landscape screen projection, and image data input from a computer is the same as a computer monitor device (for example, a landscape screen). Projection is performed by the projector module 6 in a display form. At this time, switching between landscape screen projection and portrait screen projection may be performed based on a control signal from the computer. In the above configuration, the same operation can be executed even when the projector-equipped mobile phone 10 is connected to a computer without using a cradle. That is, when connected to a computer without using a cradle, the CPU 101 detects the start of this connection or communication. For example, when a vertically long screen is projected in the horizontal position shown in FIG. The projected image is rotated in the same manner as in the case where it is placed on the cradle by the above-described method or a method based on data processing to be described later so as to obtain a horizontally long screen projection.

  The motor 207 that rotationally drives the projector module 6 may be omitted. In this case, the projector module 6 is rotated by a manual rotation operation by the user.

(Rotation of projected image by data processing)
The projected image may be electrically rotated by performing processing on the image data without rotating the projector module 6. In the above-described embodiment, the CPU 101 determines whether or not the content display form is different from the projection form at the current placement position (step S11). If different, the projector module 6 is rotated by the motor 207 (step S11). S12). Instead, the image projected on the screen S is electrically rotated by rotating the image formed on the liquid crystal panel 62 by 90 degrees. FIG. 7 is a diagram illustrating the configuration of the liquid crystal panel 62 in this case. In FIG. 7, the liquid crystal panel 62 is configured in a cross shape, the horizontally long rectangle 62a is configured to have an aspect ratio of 4: 3, and the vertically long rectangle 62b is configured to have an aspect ratio of 3: 4. The CPU 101 forms an image in the region of the rectangle 62a of the liquid crystal panel 62 when the projection content is a landscape screen, and forms an image in the region of the rectangle 62b of the liquid crystal panel 62 when the projection content is a portrait screen.

  FIG. 8 is a diagram illustrating an example in which an image that is a vertically long screen is formed in a region of a rectangle 62a that is long horizontally. If the CPU 101 determines that the image shown in FIG. 8 is a vertically long screen based on the top and bottom information of the image data file, the CPU 101 rearranges the vertical and horizontal orders of the pixel columns to which the voltage is applied to the liquid crystal panel 62. As a result, a vertically long image as shown in FIG. 9 is formed on the liquid crystal panel 62, and as a result, the projected image rotates. Since the liquid crystal panel 62 is configured in a cross shape, the number of pixels constituting the image does not change between FIGS. 8 and 9, so that a projection image of the same area can be obtained without changing the resolution. Further, unlike the case where the liquid crystal panel 62 is formed in the shape of the rectangle 62a, it is not necessary to reduce the number of pixels constituting each side of the image formed on the liquid crystal panel to 3/4, thereby reducing the load on the CPU 101. it can.

  Of course, the liquid crystal panel 62 may be formed in a square shape including the cross shape instead of the cross shape. FIGS. 10A and 10B are diagrams showing images projected on the main liquid crystal display 204 and the screen S in the state of FIG. On the screen of the main liquid crystal display 204 shown in FIG. 10A, the menu M is displayed in the normal viewing state. On the screen S shown in FIG. It is displayed on a vertically long screen. In such a case, the CPU 101 changes the orientation of the image formed on the liquid crystal panel 62 by changing the order of the pixel columns to which the voltage is applied to the liquid crystal panel 62 so as to be in the normal viewing state on the screen S. Rotate 90 degrees. As a result, the orientation of the image displayed on the main liquid crystal display 204 and the orientation of the image projected on the screen S can be aligned to achieve a normal viewing state. Instead of rotating the image formed on the liquid crystal panel 62 by 90 degrees, the projector module 6 may be controlled by the CPU 101 so as to rotate 90 degrees in the right direction shown in FIG.

  In such a case, the projector-equipped mobile phone 10 may be changed from the vertical position placement state of FIG. 3A to the horizontal position placement state of FIG. By doing in this way, the image projected on the screen S can be made into a normal vision state. However, in this case, the image displayed on the main liquid crystal display 204 is rotated 90 degrees in the left direction in FIG. 10 from the normal viewing state. The CPU 101 changes the order of the pixel columns of the menu M supplied to the main liquid crystal display 204 so that the image displayed on the main liquid crystal display 204 and the direction of the image projected on the screen S by the projector module 6 are aligned. Then, the display image is electrically rotated 90 degrees in the right direction on the paper surface of FIG. As a result, the orientation of the image displayed on the main liquid crystal display 204 and the orientation of the image projected on the screen S can be aligned and brought into a normal viewing state.

  Thus, the projection image by the projector module 6 and the display image by the main liquid crystal display 204 are rotated according to the mounting direction (mounting form) of the projector-equipped mobile phone 10. At this time, as described above, the image is rotated in accordance with the type of information to be displayed, such as a vertically long screen or a horizontally long screen. With this configuration, the image displayed on the main liquid crystal display 204 and the image projected on the screen S can be aligned, and both can be in a normal viewing state.

  As an example of the configuration of the projector module 6, the case where a light image forming element is configured using the liquid crystal panel 62 and the image by the liquid crystal panel 62 is illuminated with the light from the LED light source 63 has been described. The optical image forming element may be used. In this case, an optical image forming element is configured by arranging point light sources corresponding to pixels, and the optical image forming element generates a light image by emitting light of luminance corresponding to the image signal for each pixel. .

  In the above description, the projection image is projected at a position that is offset from the opening center O of the projector module 6. However, in the present invention, it is not always necessary to provide an offset. In this case, the tilt adjustment may be performed so that a part of the projected image does not cover the placement surface.

  In the above description, an example in which the projector module 6 is mounted on the mobile phone 10 has been described. However, the projector module 6 may be mounted on an electronic device such as a notebook computer, a PDA, an electronic camera, or a playback device instead of the projector-equipped mobile phone 10.

  The shape of the electronic device on which the projector module 6 is mounted is not limited to the above-described folded shape, but may be a so-called rectangular parallelepiped shape.

  The above description is merely an example, and the interpretation of the invention is not limited to the correspondence between the components of the above-described embodiment and the components of the present invention.

1 is a perspective view of a projector-equipped mobile phone according to an embodiment of the present invention. It is a block diagram explaining the structure of the mobile phone with a projector. (a) is the figure which looked at the screen which the mobile phone with a projector of a vertical position mounts in front of the screen which projects an image. (b) It is the figure which looked at the screen from the right side. (a) is the figure which looked in the direction where the screen with which the projector-equipped mobile phone of a horizontal position mounts projects an image directly. (b) It is the figure which looked at the screen from the right side. It is an enlarged view of a projector module. It is a flowchart explaining the flow of the rotation process of a projector module. It is a figure explaining the structure of the liquid crystal panel in the case of rotating a projection image by processing on image data. It is a figure explaining the example in which the image which is a vertically long screen was formed in the rectangular area long horizontally. It is a figure explaining the image of the vertically long screen formed in the rectangular area | region long vertically. (a) is a figure which shows the image displayed on a main liquid crystal display in the state of Fig.3 (a), (b) is a figure which shows the image projected on a screen in the state of Fig.3 (a). .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Operation part 2 ... Display part 3 ... Folding hinge part 6 ... Projector module 10 ... Cell-phone 11, 12a-12d, 21 with a projector ... Small leg part 60 ... Cylindrical member 61 (61a, 61b) ... Projection lens 62 ... Liquid crystal Panel 63 ... LED light source 101 ... CPU
103 ... attitude sensors Iv, IvR, Ih, IhL ... projected image Ax ... incident optical axis Fc ... luminous flux center line M ... round hole P ... plane S ... screen

Claims (14)

In an electronic apparatus including a projector device that projects an image formed on a light image forming element toward a projection surface outside a housing via a projection optical system,
The projector device includes a first placement form in which the electronic device is placed on a plane on which the electronic device and the projection surface are placed, with the first surface of the housing facing down, and the first An image projected from the projector device is not obstructed by the plane in any of the second placement forms in which the electronic device is placed with the second surface of the housing different from the first surface down. As described above, the direction of the projected light beam is determined and the image is projected. The electronic device according to claim 1,
The direction of the projected light beam is determined so that the center line of the projected light beam is directed upward from a plane parallel to the plane in both the first placement mode and the second placement mode. Electronic equipment characterized by The electronic device according to claim 1,
The direction of the projection light beam is determined so that the end of the projection light beam does not protrude from either the first surface or the second surface of the electronic device. The electronic device according to claim 1,
The direction of the projected light beam is the same as the direction of projection toward the projection surface at the lower end of the projected light beam in both the first placement mode and the second placement mode. An electronic apparatus characterized by being set to face in the same direction as a parallel plane or above the direction. The electronic device according to claim 1,
The direction of the projected light beam is such that the projector device is placed on the projection surface disposed at the position of the maximum projection distance within a projection distance range in which the focus state of the image on the projection surface is appropriately maintained. An electronic apparatus characterized in that, when an image is projected, the image is determined not to be blocked by the plane in both the first placement mode and the second placement mode. The electronic device according to claim 1,
Each of the first placement mode and the second placement mode further includes a correction unit that corrects trapezoidal distortion on the projection surface of the image projected from the projector device with the same correction characteristics. Electronic equipment characterized by The electronic device according to claim 6,
The correction means further corrects the correction characteristics of the trapezoidal distortion of the image on the projection surface so that the correction characteristics are different in the first mounting form and the second mounting form. Electronic equipment characterized by In the electronic device in any one of Claims 1-6,
The electronic device according to claim 1, wherein members are provided on the first surface and the second surface to indicate that they are to be placed down during the placement. The electronic device according to claim 1,
An electronic apparatus, further comprising: a rotation driving unit that rotationally drives at least the optical image forming element according to at least one of a type of information to be projected and a mounting form of the electronic apparatus. In the electronic device in any one of Claims 1-8,
A projection image rotating means for forming an image in which the orientation of the image is rotated on the optical image forming element;
The projection image rotating means rotates the direction of the image according to at least one of the type of information to be projected and the mounting form of the electronic device. The housing is provided with a projector device that projects an image formed on the optical image forming element toward a projection surface outside the housing via a projection optical system,
The projector device is configured such that at least the optical image forming element is rotatable around an axis substantially parallel to the optical axis of the projection optical system in a state where the casing is placed on a placement surface. Electronic equipment. The electronic device according to claim 11,
The projector device is configured to be rotatable in different directions around the substantially parallel axis. The electronic device according to claim 11,
The projector apparatus further includes an LED light source that has an illumination optical axis that is non-parallel to the rotation axis and that illuminates an image formed on the optical image forming element. The electronic device according to claim 11,
An electronic apparatus, further comprising: a rotation driving unit configured to rotate the projector apparatus according to at least one of a type of information to be projected and a direction in which the electronic apparatus is placed.

Images